Originally Posted by e90pilot
So if it's a direct swap for a 335 I think it works for 328/325. You would just need to include the rotor, pads, and backing plate. If you're going for looks, the BMW Performance/ 135i calipers look good, but for actual performance, that calipers aren't the best. The 335 rotor is larger and has a much larger swept area.
This kit will be an upgrade even for the 135i!